Overview

Division of Metrology in Length and Precision Engineering devotes itself to studying, maintaining, developing and improving national measurement standards and primary standards of geometrical parameter values. It keeps up with the world’s progress in length and precision engineering technologies to ensure the nation’s geometrical standards among those with top performance both at home and abroad.Length Division carries out research work on geometrical precision measurement technology, standards designing and on-line measurement method. It...

Director's Greeting

Division of Metrology in Length and Precision Engineering devotes itself to studying, maintaining, developing and improving national measurement standards and primary standards of geometrical parameter values. It keeps up with the world’s progress in length and precision engineering technologies to ensure the nation’s geometrical standards among those with top performance both at home and abroad.Division of Metrology in Length and Precision Engineering devotes itself to studying, maintaining, developing and improving national measurement...

News and Events

An 80m large-scale standard instrument designed by the division in 2006 reaches a measurement uncertainty of U=0.1μm+2×10-7L(k=2), where L is in meter. It is among international advanced level. The instrument is able to provide calibrat...

A new, high precision two-dimensional laser standard instrument with an original design and technical property right is successfully developed to solve distance measurement and calibration problems for precision photomasks, 2D standards, small lin...